NorCal Flag Tee from Active NorCal.
Size guide
| XS | S | M | L | XL | 2XL | 3XL | 4XL | |
| Length (inches) | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 |
| Width (inches) | 16 ½ | 18 | 20 | 22 | 24 | 26 | 28 | 30 |